Add verification step to copilot-setup-steps.yml injection

[Copilot]

The init --mcp command's injection logic only added the installation step when updating existing copilot-setup-steps.yml files, omitting the verification step that was present in the new file template.

Changes

• pkg/cli/copilot_setup.go: Modified injectExtensionInstallStep to inject both installation and verification steps
• pkg/cli/copilot_setup_test.go: Updated test expectations to validate both steps are injected

Example

When injecting into an existing workflow, both steps are now added:

steps:
  - name: Install gh-aw extension
    run: |
      curl -fsSL https://raw.githubusercontent.com/githubnext/gh-aw/refs/heads/main/install-gh-aw.sh | bash
  - name: Verify gh-aw installation
    run: ./gh-aw version
  - name: Checkout  # existing step
    uses: actions/checkout@v4

This matches the behavior of the template used when creating new files.

Original prompt

Update the copilot steps template generated by the "init" command to use installation script.

steps:

• name: Install gh-aw extension
  run: |
  curl -fsSL https://raw.githubusercontent.com/githubnext/gh-aw/refs/heads/main/install-gh-aw.sh | bash
• name: Verify gh-aw installation
  run: ./gh-aw version

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[Copilot]

Pull request overview

This PR enhances the init --mcp command's injection logic to include both installation and verification steps when updating existing copilot-setup-steps.yml files, matching the behavior of the template used for new files.

Key Changes:

• Modified the injection function to add both install and verify steps instead of just the install step
• Updated test expectations to validate that both steps are correctly injected
• Updated function documentation to reflect the dual-step injection

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pkg/cli/copilot_setup.go	Updated injectExtensionInstallStep to inject both the installation step and the verification step into existing workflows
pkg/cli/copilot_setup_test.go	Updated test expectations to validate that 2 steps (install + verify) are injected instead of just 1 step

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